我的印象是,在出现观点之后,我想说一下。 我做以下工作:
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
CGRect folderFrame = self.folderImage.frame;
folderFrame.origin.y += 250;
[UIView animateWithDuration:250 animations:^{
self.folderImage.frame = folderFrame;
}];
}
但我看不出任何 an。 我做了什么错误?
我认为,它正在发挥作用,但从第二点移到1点,实际上难以接受。 说明估计时间较短。
如果这是你使用的确切代码,那么问题可能是,你有计算250秒(约4分钟)。 能否做到is,只是非常缓慢的;
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